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Thermo Scientific
49iQPS Instruction Manual
5-1
Chapter 5
Troubleshooting
This chapter presents guidelines for diagnosing analyzer failures, isolating
faults, and includes recommended actions for restoring proper operation.
Read the safety precautions in Appendix A, “
Safety
” before performing any
actions listed in this chapter.
Table 5–1
provides general troubleshooting information for the common
platform and indicates the checks that you should perform if you
experience an instrument problem. It also lists 49iQPS specific
troubleshooting information and alarm messages you may see on the
graphics display and provides recommendations about how to resolve the
alarm condition.
Table 5–1.
49iQPS Troubleshooting Guide
Problem
Possible Cause
Action
Instrument does not
start (LEDs on front
panel do not come on
and display is blank)
No power
Verify that the power cord is plugged
in, power is available and that it
matches the voltage and frequency
configuration of the instrument.
Fuse is blown or missing
Disconnect power and check fuses
with a volt meter.
Bad switch or wiring
connection to switch
Check for 24V @ J9 on the Backplane
board (middle pins). Check all wiring
connections.
Front panel display
does not start (LEDs
on front panel are off)
Disconnected ribbon cable
Power down and evaluate
connections of display ribbon cable.
Front panel display
does not start (LEDs
on front panel are on)
Defective Display
Connect to the instrument using
ePort. Select “Remote Interface”. If
normal GUI is displayed, replace
defective display.
Front panel display
stays white after
power up (LEDs on
front panel are on)
Unseated or missing Micro
SD card
Power off, re-seat Micro SD or install
if missing.
Safety Precautions
Troubleshooting
Guide
Summary of Contents for Ozone Primary Standard 49iQPS
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